F region
【气象学】F区,F(电离)层(＝F layer)
🧩 词语组成解析
🗣️ 情景例句
It's a wonderful opportunity, Richard.
这是一个好机会 Richard。
If his plan works, he'll earn 100 million in 10 years.
如果按照他的计划做，十年就能挣到一亿元了。
As a matter of fact, it is the other way around.
事实上，情况正好相反。